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https://issues.apache.org/jira/browse/COLLECTIONS-874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary D. Gregory resolved COLLECTIONS-874.
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Fix Version/s: 4.5.1
Assignee: Gary D. Gregory
Resolution: Fixed
Hi [~s.goetz] and good catch.
This is now fixed in git master and our Maven snapshot repository:
[https://repository.apache.org/content/repositories/snapshots/]
> MapUtils.getLongValue(Map<? super K, ?>, K, Function<K, Long>) returns a byte
> instead of a long
> -----------------------------------------------------------------------------------------------
>
> Key: COLLECTIONS-874
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-874
> Project: Commons Collections
> Issue Type: Bug
> Components: Map
> Affects Versions: 4.5.0
> Reporter: Sebastian Götz
> Assignee: Gary D. Gregory
> Priority: Major
> Fix For: 4.5.1
>
>
> When using the following method
> {code:java}
> org.apache.commons.collections4.MapUtils.getLongValue(Map<? super K, ?>, K,
> Function<K, Long>)
> {code}
> the resulting value no matter if it is the value returned by the
> defaultFunction or the value contained in the map is returned as byte:
> {code:java}
> return applyDefaultFunction(map, key, MapUtils::getLong, defaultFunction,
> 0L).byteValue();
> {code}
> The problem ist the final call to {{{}byteValue(){}}}. If the returned value
> is greater than 127 the implicit cast back to a long will make it a negative
> number (e.g. the byte 0xaf/175 will become 0xffffffffffffffaf/-81).
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